The LPNPU is Eventide's intelligence layer that never sleeps. Running on the same LP Island as the LPE cores and 2DKR tile, this dedicated neural processor delivers 88 TOPS of inference power while consuming less than 1.4W at peak—enabling always-on keyword detection, presence sensing, and hardware thread orchestration without touching the main CPU.
Continuous, zero-CPU wake-on-voice keyword detection using Gaussian Mixture Model (GMM) phoneme analysis. The LPNPU monitors ambient audio in real-time, detects user intent through keyword confidence thresholds, and routes SONAR presence signals—all without involving the main processor or waking the LPE cluster.
Predictive task dispatch co-processor running lightweight AI models to forecast task runqueue states before threads become schedulable. The LPNPU signals the UHP Solar Eclipse cores to pre-stage frequency targets, delivering sub-100ns arbitration advantage over OS scheduler latency.
Persistent behavioral AI that learns user habits and system patterns. Predicts app pre-staging needs, recommends dynamic power profiles, and orchestrates tile wake sequences. Runs continuously, shaping the system's response before user demand is visible to the OS.
SONAR (Signal Observation and Nearfield Analysis Radar) leverages the LPNPU's always-on compute to analyze WiFi signal reflections in real-time. By measuring Doppler shifts in reflected RF energy, the LPNPU detects human presence within a ~3m radius—without requiring new hardware, external cameras, or privacy intrusions.
When a user approaches the device, SONAR wakes the display from black screen at sub-100ms latency. As the user moves away, the display dims intelligently. The system learns spatial occupancy patterns, enabling predictive wake sequencing and context-aware power state transitions.
This tight coupling between WiFi analog front-end and LPNPU compute creates a new class of ambient awareness—proximity sensing without the power cost of dedicated proximity hardware.
| Inference Platform | Compute Location | Typical Power Draw | Advantage |
|---|---|---|---|
| LPNPU | Dedicated NPU (LP Island) | <1.4W | Baseline |
| LPE Cores | Low-Power Execution (Darkmont) | ~8W | 5.7× more power |
| DP Cores | Data Path (UHP Solar Eclipse) | ~22W | 15.7× more power |